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Extending the soundscape of a hexaphonic guitar pickup
BillTodd:
This is like a trip down memory lane for me , I was doing something not so different 45 years ago :-)
awemawson:
I still have some IC 'leg straighteners' consisting of a jig and some bearing races that progressively form the legs to the correct spacing for a socket. I'll take a picture later when I'm in the workshop.
awemawson:
Picture as promised (of the IC leg straighteners)
sorveltaja:
Thanks for the replies, guys. Awemawson, that's an interesting idea of the leg straightener. Haven't seen those before. Shouldn't be too hard to make one.
Another way could be like this, that has printed/machined block with a 'pocket' to fit the IC in:
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Then the legs are pressed, using vice:
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That block might not be necessary, but it limits the legs from bending too much. It seems to work quite well, at least on 14 and 16 pin ones, and the IC's pop nicely into sockets.
On the other hand, I finally got my head around of how that mod should be connected to the main circuit:
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Now that it's done, moment of truth gets closer. All the needed basic wiring is done, except power connections(three wires for the main boards, and two for the mod board).
The main circuitry(pcb's) is yet to be verified. As far as I know, most of the builders of this device have built it using the kit, that was available on the Paia website(not sure, if they still make that kit, as it's been out of stock for a long time).
Plan is to start testing as soon as the power wirings are done.
sorveltaja:
Well, first testings are done. No smoke or sparks so far, but the device behaves strangely. All kinds of odd distorted sounds, but not the actual vocoder-effect.
There could well be error(s) in the pcb layouts, that I traced myself. Or bad soldering, like bridges between traces. Or just about anything.
So the tedious part of stomping bugs is about to begin. After checking the solderings, and if they are ok, is to use an audio probe, to follow, how far the input signal goes, before it starts to distort/clip.
But yes, it is always a gamble to build something using pcb layouts, that aren't verified by any other builder(s).
I had some success building a working, but rather complex as a whole(at least for me) circuitry for the hex pickup, but it was divided in so many 'blocks', which were built one at a time, and tested, before even planning the next one.
Easy to say afterwards, but I should have done same with this project also. When one is stubborn like me, learning takes time.
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